Package org.plumelib.util

Class StringsP.VersionNumberComparator

java.lang.Object

org.plumelib.util.StringsP.VersionNumberComparator

All Implemented Interfaces:

Comparator<String>

Enclosing class:

StringsP

public static class StringsP.VersionNumberComparator
extends Object
implements Comparator<String>

A comparator that compares version numbers. It must only be invoked on strings that are version numbers.

This comparator is inconsistent with equals: it compares each component numerically, so it returns 0 for two unequal strings whose components have leading zeros, such as "1.2" and "1.02".

A component may be arbitrarily large; it is not converted to an int, so a component larger than Integer.MAX_VALUE does not cause an exception.

Constructor Summary

Constructors

Constructor	Description
VersionNumberComparator()	Creates a new VersionNumberComparator.

Method Summary

Modifier and Type	Method	Description
int	compare(String s1, String s2)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Comparator

equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Details

VersionNumberComparator

public VersionNumberComparator()

Creates a new VersionNumberComparator.

Method Details

compare

public int compare(String s1,
 String s2)

Specified by:

compare in interface Comparator<String>